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Tamper-Indication Fastener

IP.com Disclosure Number: IPCOM000061495D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Miles, AW: AUTHOR

Abstract

A variety of machine covers have previously been provided with tamper- indication seals which, while not excluding unauthorized entry into machine covers, control or controlled areas, at least make unauthorized entry evident by breaking of the seal. The present disclosure makes dual use of a common fastener having affixed to it a frangible, plastic hanger that will break if unauthorized entry is made. Fig. 1 illustrates the concepts involved. A fastener 1, which may be a threaded screw, a rivet, a snap-lock friction fastener or any of a variety of similar devices, is outfitted with an extension 2 of frangible plastic, such as nylon or the like, molded in the form of a T- shape and rigidly affixed to the end of the fastener 1.

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Tamper-Indication Fastener

A variety of machine covers have previously been provided with tamper- indication seals which, while not excluding unauthorized entry into machine covers, control or controlled areas, at least make unauthorized entry evident by breaking of the seal. The present disclosure makes dual use of a common fastener having affixed to it a frangible, plastic hanger that will break if unauthorized entry is made. Fig. 1 illustrates the concepts involved. A fastener 1, which may be a threaded screw, a rivet, a snap-lock friction fastener or any of a variety of similar devices, is outfitted with an extension 2 of frangible plastic, such as nylon or the like, molded in the form of a T- shape and rigidly affixed to the end of the fastener 1. Such devices are well known as merchandise tag- affixing means but may be employed here by integrally molding or cementing the extension 2 to the fastener 1. Fastener 1 is inserted through aperture 3 in a typical application to affix a machine cover to a machine base. The base 4 and the cover 5 are joined by the screw passing through the base 4 and a portion of the cover 5 shown as the cover base 6. Numerous alternatives will be readily apparent wherever machine covers, bases, unauthorized access areas and the like are to be secured. The physical requirements of the fastener and extension structure are that the three lengths H of the extension 2 be at least as great as or greater than the length Q, which is the dim...